Spaces:
Running
Running
File size: 876 Bytes
e02ffe6 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
import numpy as np
# --- PL-DATAMODULE ---
def get_local_split(items: list, world_size: int, rank: int, seed: int):
""" The local rank only loads a split of the dataset. """
n_items = len(items)
items_permute = np.random.RandomState(seed).permutation(items)
if n_items % world_size == 0:
padded_items = items_permute
else:
padding = np.random.RandomState(seed).choice(
items,
world_size - (n_items % world_size),
replace=True)
padded_items = np.concatenate([items_permute, padding])
assert len(padded_items) % world_size == 0, \
f'len(padded_items): {len(padded_items)}; world_size: {world_size}; len(padding): {len(padding)}'
n_per_rank = len(padded_items) // world_size
local_items = padded_items[n_per_rank * rank: n_per_rank * (rank+1)]
return local_items
|